Downloaded from www.Manualslib.com manuals search engine 4A-7 Brake Control System and Diagnosis:
Repair Instructions
Brake Pedal ComponentsS6RW0D4106018
CAUTION!
If equipped Brake Pedal Foot Protection
System, never disassemble brake pedal
assembly. Disassemble will spoil its original
function. If faulty condition is found, replace
it with new one.
Brake Pedal Free Height InspectionS6RW0D4106001
1) Check brake pedal free height. If it is not within
specification, check and adjust following item 2) and
6).
Brake pedal free height “a” from carpet
111 – 131 mm (4.4 – 5.1 in.)
2) Check measurement between booster mounting
surface and center of clevis pin hole. When booster
push rod clevis has been reinstalled, it is important
that the measurement is adjusted (refer to “Brake
Booster Inspection”).
3) Check brake light switch position. Adjust it if it is out
of specification.
4) Check pedal for dent.
5) Check brake booster for installation.6) Check brake booster push rod for length.
Brake Pedal Play InspectionS6RW0D4106002
Pedal play should be within the following specification. If
out of specification, check brake light switch for proper
installation position and adjust if necessary.
Also check pedal shaft bolt and booster clevis pin
installation for looseness and replace if defective.
Brake pedal play
“a”
: 1 – 8 mm (0.04 – 0.31 in.)
Excessive Pedal Travel InspectionS6RW0D4106003
1) Start engine.
2) Depress brake pedal a few times.
3) With brake pedal depressed with approximately 300
N (30 kg, 66 lbs) load, measure brake pedal to wall
(dash panel silencer) clearance “a”. If clearance is
out of specification, possible causes are as follows.
If clearance “a” is less than specification, the most
possible cause is that air is in lines or brake fluid
leakage.
Should clearance “a” remain less than specification
even after bleeding of system, other possible but
infrequent cause is malfunction of booster push rod
length out of adjustment.
• Bleed brake system. Refer to “Air Bleeding of
Brake System”.
Brake pedal arm to wall clearance
“a”
When pedal is depressed at 300 N (30 kg, 66 lbs)
: Over 40 mm (1.57 in.)
[A]: A/T model : 13 N⋅m (1.3 kgf-m, 9.5 lb-ft)
1. Brake pedal : 23 N⋅m (2.3 kgf-m, 16.5 lb-ft)
2. Brake pedal bracket
I6RW0C410004-01
I6RW0C410005-01
“a”I3RH0A410010-01
I6RW0C410006-01
Downloaded from www.Manualslib.com manuals search engine Brake Control System and Diagnosis: 4A-8
Brake Fluid Level InspectionS6RW0D4106004
CAUTION!
Do not use shock absorber fluid or any other
fluid which contains mineral oil. Do not use a
container which has been used for mineral oil
or a container which is wet from water.
Mineral oil will cause swelling and distortion
of rubber parts in hydraulic brake system and
water mixed into brake fluid will lower fluid
boiling point. Keep all fluid containers
capped to prevent contamination.
NOTE
Be sure to use particular brake fluid either as
indicated on reservoir cap of that vehicle or
recommended in owner’s manual which
comes along with that vehicle. Use of any
other fluid is strictly prohibited.
Fluid level should be between MIN and MAX
lines marked on reservoir.
When brake warning light lights sometimes
during driving, replenish fluid to MAX level.
When fluid decreases quickly, inspect brake
system for leakage. Correct leaky points and
then refill to specified level.
1) Check master cylinder, reservoir and reservoir hose
(if equipped) for crack, damage and brake fluid
leakage. If any faulty condition exists, correct or
replace.
2) Check that brake fluid level is between MAX (1) and
MIN marks (2) on reservoir.
Brake Light Switch AdjustmentS6RW0D4106005
Adjustment should be made as follows. Pull up brake
pedal toward you and while holding it there, adjust
switch position so that clearance between end of thread
and brake pedal is as specified. Then lock it by turning
clockwise.
Clearance between brake pedal and brake light
switch
“a”: 0.5 – 1.5 mm (0.02 – 0.05 in.)
Air Bleeding of Brake SystemS6RW0D4106006
CAUTION!
Brake fluid is extremely damaging to paint. If
fluid should accidentally touch painted
surface, immediately wipe fluid from paint
and clean painted surface.
Bleeding operation is necessary to remove air whenever
it entered hydraulic brake system.
Hydraulic lines of brake system are based on the
diagonal split system. When a brake pipe or hose was
disconnected at the wheel, bleeding operation must be
performed at both ends of the line of the removed pipe or
hose. When any joint part of the master cylinder of other
joint part between the master cylinder and each brake
(wheel) was removed, the hydraulic brake system must
be bled at all 4 wheel brakes.
NOTE
Perform bleeding operation starting with rear
brake caliper or wheel cylinder farthest from
master cylinder and then at front caliper of
the same brake line. Do the same on the
other brake line.
1
2
I7RW01410004-01
1. Right front brake caliper 3. Right rear wheel cylinder
2. Left front brake caliper 4. Left rear wheel cylinder
I5RW0A410005-01
I7RW01410005-01
Downloaded from www.Manualslib.com manuals search engine Brake Control System and Diagnosis: 4A-10
• Check to make sure that flexible hose doesn’t contact
any part of suspension, both in extreme right and
extreme left turn conditions. If it does at any point,
remove and correct. Fill and maintain brake fluid level
in reservoir.
• Bleed brake system. Refer to “Air Bleeding of Brake
System”.
• Perform brake test and check installed part for fluid
leakage.
Rear Brake Hose / Pipe Removal and
Installation
S6RW0D4106008
CAUTION!
Do not allow brake fluid to get on painted
surfaces. Painted surfaces will be damaged
by brake fluid, flush it with water immediately
if any fluid is spilled.
Removal
1) Raise and support vehicle properly. Remove tire and
wheel.
2) Clean dirt and foreign material from both flexible
hose end and pipe end fittings.
3) Drain brake fluid in reservoir.
4) Remove brake flexible hose or pipe.
Installation
Reverse brake flexible hose removal procedure, noting
the following.
• Install clamps and tighten nuts referring to “Rear
Brake Hose / Pipe Construction”.
• Fill and maintain brake fluid level in reservoir.
• Bleed brake system. Refer to “Air Bleeding of Brake
System”.
• Perform brake test and check each installed part for
fluid leakage.
• When installing hose, make sure that it has no twist or
kink.
Brake Hose and Pipe InspectionS6RW0D4106009
Hose
The brake hose assembly should be checked for road
hazard damage, for cracks and chafing of outer cover,
for leaks and blisters. A light and mirror may be needed
for an adequate inspection. If any above conditions are
observed on brake hose, it is necessary to replace it.
Pipe
Inspect the pipe for damage, cracks, dents and
corrosion. If any defect is found, replace it.
2. Location mark
3. Outside of vehicle
4. Inside of vehicle
I7RW01410007-02
I5RW0A410007-01
Downloaded from www.Manualslib.com manuals search engine Brake Control System and Diagnosis: 4A-12
3) Drain brake fluid in reservoir.
4) Disconnect clutch reservoir hose from reservoir (M/T
model).
5) Remove reservoir connector pin (1) by using special
tool and then reservoir.
Special tool
(A): 09916–44310
Installation
1) When using new grommets (2), lubricate them with
the same fluid as the one to fill reservoir with.
Then press-fit grommets (2) to master cylinder (3).
2) Install reservoir (1) to master cylinder.
3) Drive in reservoir connector pin (2) by using special
tool (A). Till both of its ends at the right and left of
reservoir (1) becomes the same length.
Special tool
(A): 09916–44310 4) Connect clutch reservoir hose to reservoir (M/T
model).
5) Connect fluid level switch coupler (1) and clamp (3)
to reservoir (2).
6) Fill reservoir with specified brake fluid up to its MAX
level.
7) After completing the work, bleed air from brake
system referring to “Air Bleeding of Brake System”
and bleed air from clutch system referring to“Air
Bleeding of Clutch System in Section 5C” (M/T
model).
8) Check each installed parts for fluid leakage.
9) Perform brake test and check fluid leakage.
Master Cylinder Removal and InstallationS6RW0D4106012
Removal
CAUTION!
• Never disassemble master cylinder since
the master cylinder is supplied as
assembly parts.
If faulty condition is found, replace it with
new one.
• Do not allow brake fluid to get on painted
surfaces. Painted surfaces will be
damaged by brake fluid, flush it with water
immediately if any fluid is spilled.
1) Clean outside of master cylinder.
2) Disconnect fluid level switch coupler (1) and clamp
(3) from reservoir (2).
1 (A)I5JB0A410013-02
1
2
2
3
I7RW01410010-02
I7RW01410011-01
2
13
I7RW01410009-01
2
13
I7RW01410009-01
Downloaded from www.Manualslib.com manuals search engine Brake Control System and Diagnosis: 4A-14
Booster Operation InspectionS6RW0D4106014
There are two ways to perform this inspection, with and
without a tester. Ordinarily, it is possible to roughly
determine its condition without using a tester.
NOTE
For this check, make sure that no air is in
hydraulic line.
Check Air Tightness
1) Start engine.
2) Stop engine after running for 1 – 2 minutes.
3) Depress brake pedal several times with the same
load as in ordinary braking and observe pedal travel.
If pedal goes down deep the first time but its travel
decreases as it is depressed the second and more
times, air tightness is obtained.
4) If pedal travel doesn’t change, air tightness isn’t
obtained.
NOTE
If defective, inspect vacuum lines and sealing
parts, and replace any faulty part. When this
has been done, repeat the entire test.
Check Operation
1) With engine stopped, depress brake pedal several
times with the same load and make sure that pedal
travel doesn’t change.
2) Start engine while depressing brake pedal. If pedal
travel increases a little, operation is satisfactory. But
no change in pedal travel indicates malfunction.
Check Air Tightness Under Load
1) With engine running, depress brake pedal. Then
stop engine while holding brake pedal depressed.
1. 1st 2. 2nd 3. 3rd
1. 1st, 2nd, 3rd
I2RH01410005-01
I2RH01410006-01
H: Hold
I2RH01410007-01
I2RH01410008-01
I2RH01410009-01
Downloaded from www.Manualslib.com manuals search engine 4A-15 Brake Control System and Diagnosis:
2) Hold brake pedal depressed for 30 seconds. If pedal
height does not change, condition is good. But it isn’t
if pedal rises.
Brake Booster Removal and InstallationS6RW0D4106015
Removal
1) Remove master cylinder assembly from booster
referring to “Master Cylinder Removal and
Installation”.
2) Disconnect vacuum hose from booster referring to
“Master Cylinder and Brake Booster Components”.
3) Remove front brake pipe (from master cylinder
primary and secondary to ABS hydraulic unit pipe)
referring to “Front Brake Hose / Pipe Removal and
Installation”.
4) Remove clip (1) and then remove push rod clevis pin
(2).
5) Loosen booster mounting nuts (3) and then remove
booster.Installation
1) Install booster to dash panel. Then connect push rod
clevis pin (2) and clip (1).
2) Tighten booster mounting nuts (3) to specified
torque.
Tightening torque
Booster mounting nut (a): 13 N·m (1.3 kgf-m, 9.5
lb-ft)
3) Connect vacuum hose to booster referring to
“Master Cylinder and Brake Booster Components”.
4) Install front brake pipe (from master cylinder primary
and secondary to ABS hydraulic unit pipe) referring
to “Front Brake Hose / Pipe Removal and
Installation”.
5) Install master cylinder assembly to booster referring
to “Master Cylinder Removal and Installation”.
6) Fill reservoir with specified fluid.
7) Bleed air from brake system referring to “Air
Bleeding of Brake System” and at the same time
bleed air from clutch system referring to “Air
Bleeding of Clutch System in Section 5C” (M/T
model).
8) Check pedal height and play referring to “Brake
Pedal Free Height Inspection” and “Brake Pedal
Play Inspection”.
9) Check each installed part for fluid leakage and
perform brake test.
Brake Booster InspectionS6RW0D4106016
• Check brake booster for damage and operation.
• Check boot for damage and deterioration.
• Check for push clevis rod distance.
If any malfunction is found, replace brake booster.
H: Hold
T: 30 seconds
I2RH01410010-01
3
3 1 2
I5RW0A410019-02
3,(a)
3,(a) 1 2
I5RW0A410021-02
Downloaded from www.Manualslib.com manuals search engine Parking Brake: 4D-2
Repair Instructions
Parking Brake Inspection and AdjustmentS6RW0D4406001
Inspection
Hold center of parking brake lever grip and pull it up with
200 N (20 kg, 44 lbs) force.
With parking brake lever pulled up as shown, count
ratchet notches. There should be 4 – 9 notches.
Also, check if both right and left rear wheels are locked
firmly.
To count number of notches easily, listen to click sounds
that ratchet makes while pulling parking brake lever
without pressing its button.
One click sound corresponds to one notch.
If number of notches is out of specification, adjust cable
referring to adjustment procedure so as to obtain
specified parking brake stroke.
NOTE
Check tooth tip of each notch for damage or
wear.
If any damage or wear is found, replace
parking brake lever.
Adjustment
NOTE
Make sure for the following conditions before
cable adjustment.
• No air is trapped in brake system.
• Brake pedal travel is proper.
• Start engine and then brake pedal has
been depressed at least 3 times with about
300 N (30 kg, 66 lbs) load.
• Parking brake lever has been pulled up a
few times with about 200 N (20 kg, 44 lbs)
load.
If parking brake cable is replaced with new
one, pull up parking brake lever a few
times with about 500 N⋅m (50 kg, 110 lbs)
force.
After confirming that the conditions are all satisfied,
adjust parking brake lever stroke by loosening or
tightening adjust nut (1).
NOTE
Check brake drum for dragging after
adjustment.
Parking brake stroke
When lever is pulled up at 200 N (20 kg, 44 lbs): 4 to
9 notches
Parking Brake Cable Removal and InstallationS6RW0D4406002
Removal
NOTE
When it is necessary to remove both right
and left parking brake cables, repeat below
steps 2) and 6) on right and left wheels.
1) Hoist vehicle.
2) Remove wheel.
3) Disconnect parking brake cable from equalizer
(parking brake lever) and clamps.
4) Remove brake drum. Refer to “Rear Brake Drum
Removal and Installation in Section 4C”.
5) Disconnect parking brake cable from brake shoe
lever referring to “Rear Brake Shoe Removal and
Installation in Section 4C”.
6) Remove parking brake cable and parking cable
bracket.
Installation
Install it by reversing removal procedure, noting the
following points.
• Install clamps properly referring to “Parking Brake
Cable Construction”.
• Tighten bolts and nuts to specified torque referring to
“Parking Brake Cable Construction”.
• Adjust parking brake cable. Refer to “Parking Brake
Inspection and Adjustment”.
• Check brake drum for dragging and brake system for
proper performance. Brake test should be performed.
I4RS0B440002-01
1
I6RW0C440002-01
Downloaded from www.Manualslib.com manuals search engine ABS: 4E-10
Problem symptom confirmation
Check if what the customer claimed in “Customer
Questionnaire” is actually found in the vehicle and if that
symptom is found, whether it is identified as a failure.
(This step should be shared with the customer if
possible.) Check warning lights related to brake system
referring to “EBD Warning Light (Brake Warning Light)
Check” and “ABS Warning Light Check”.
DTC check, record and clearance
Perform “DTC Check” procedure, record it and then
clear it referring to “DTC Clearance”.
Recheck DTC referring to “DTC Check”.
When DTC which is recorded at DTC check procedure is
detected again after performing DTC clearance, go to
“Step 4: ABS Check: ” to proceed the diagnosis.
When DTC which is recorded at DTC check procedure is
not indicated anymore after performing DTC clearance,
ABS control module does not perform the system
diagnosis, or temporary abnormality may occur,
therefore go to “Step 2: Driving Test: ” to proceed the
diagnosis.
Step 2: Driving Test
Test drive the vehicle at 40 km/h (25 MPH) for more than
a minute and check if any trouble symptom (such as
abnormal lighting of ABS warning light) exists.
If the malfunction DTC is confirmed again at ignition
switch ON, driving test as described is not necessary.
Proceed to Step 3.
Step 3: DTC Check
Recheck DTC referring to “DTC Check”.
Step 4: ABS Check
According to ABS Check for the DTC confirmation in
Step 3, locate the cause of the trouble, namely in a
sensor, switch, wire harness, connector, actuator
assembly or other part and repair or replace faulty parts.
Step 5: Brakes Diagnosis
Check the parts or system suspected as a possible
cause referring to “Brakes Symptom Diagnosis in
Section 4A” and based on symptoms appearing on the
vehicle (symptom obtained through Steps 1 and 2 and
repair or replace faulty parts, if any).
Step 6: Check for Intermittent Problem
Check parts where an intermittent trouble is easy to
occur (e.g., wire harness, connector, etc.), referring to
“Intermittent and Poor Connection Inspection in Section
00” and related circuit of trouble code recorded in Step 1
to 3.
Step 7: Final Confirmation Test
Confirm that the problem symptom has gone and the
ABS is free from any abnormal conditions. If what has
been repaired is related to the malfunction DTC, clear
the DTC once referring to “DTC Clearance” and perform
test driving and confirm that no DTC is indicated.ABS Warning Light CheckS6RW0D4504002
1) Turn ignition switch ON.
2) Check that ABS warning light (1) comes ON for
about 2 seconds and then goes off.
If any faulty condition is found, advance to “ABS
Warning Light Does Not Come ON at Ignition Switch
ON” or “ABS Warning Light Comes ON Steady”.
EBD Warning Light (Brake Warning Light)
Check
S6RW0D4504003
NOTE
Perform this check on a level place.
1) Turn ignition switch ON with parking brake applied.
2) Check that EBD warning light (brake warning light)
(1) is turned ON.
3) Release parking brake with ignition switch ON and
check that EBD warning light (brake warning light)
goes off.
If it doesn’t go off, go to “EBD Warning Light (Brake
Warning Light) Comes ON Steady”.
11
I4RS0A450007-01
BRAKE
1
I4RS0A450008-01